<?php
class Model_Group extends Model_Base implements Zend_Acl_Role_Interface {
   
   protected $_pk = 'id';
   protected $_fields = array(
      'id', 'name'
   );
   protected $_name = 'groups';
   
   public function getRoleId() {
      return 'group-' . $this->getId();
   }
   
   
   
   
}